|First run Memtest86 to make sure that memory errors are not giving you false errors on your hard drive test.|
NO, actually, the Very First step it to make sure you have a back up on your files then run Memtest86.
If the memory tests completely OK then rerun the WD utility, if the errors are repairable, it should be able to perform this for you.
Personally, if the 8 bad segments prove to be confirmed (after the memory test), I would back up (if you have not already) and replace the hard drive. If you have that many errors, more are likely to follow and I feel that you need to be able to trust your hard drives completely. We always need back ups, but we never plan to use them. Using a drive that is going bad, is trusting too much in your back up.
You have to be a little bit crazy to keep you from going insane.